Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
A fractographical investigation of weld toe imperfections in tandem gas metal arc welding
University West, Department of Technology, Mathematics and Computer Science.
University West, Department of Technology, Mathematics and Computer Science.
2006 (English)In: Steel Research International, ISSN 1611-3683, Vol. 77, no 12, p. 889-895Article in journal (Refereed) Published
Abstract [en]

Prediction and control of flaws in welds play important roles in design of complex structures against fatigue and fracture failure. Cold laps - outer lack of fusion - are small geometrical imperfections at weld toes, which act as fatigue crack initiation sites and reduce the life of welded structures drastically. The aim of this work is to characterize and categorize different types of such imperfections in the tandem gas metal arc welding process and find the mechanisms of their formation. Tandem welding process with different welding parameters was used to produce bead-on-plate coupons. These coupons were then sliced to smaller specimens for further investigations. For studying the weld toes, all the specimens were hit in an impact test machine and then the fracture surfaces of welds and base materials were analysed by scanning electron microscopy (SEM). Two types of cold laps were observed at weld toes, namely overlap and spatter. Observation and measurement showed that these imperfections are in the form of micro cracks with depth between 0.1 to 1.5mm and length between 0.1 to 4 mm.

Place, publisher, year, edition, pages
2006. Vol. 77, no 12, p. 889-895
Keywords [en]
Cold laps, Overlap, Spatter, Tandem GMA welding, Weld defects, Weld quality, Failure (mechanical), Fracture, Gas metal arc welding, Scanning electron microscopy, Structural design, Welds, Fractography
National Category
Materials Engineering
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-1806ISBN: 16113683 OAI: oai:DiVA.org:hv-1806DiVA, id: diva2:271464
Available from: 2009-10-12 Created: 2009-10-08 Last updated: 2010-06-21Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

http://www.scopus.com/scopus/inward/record.url?eid=2-s2.0-33846693144&partnerID=40

Search in DiVA

By author/editor
Farajian-Sohi, MajidJärvstråt, Niklas
By organisation
Department of Technology, Mathematics and Computer Science
Materials Engineering

Search outside of DiVA

GoogleGoogle Scholar

isbn
urn-nbn

Altmetric score

isbn
urn-nbn
Total: 203 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf